Improvement in scrapers for lamp-black apparatus



P. NEFF.

SCRAPERS FOR LAMP BLACK APPARATUS.

No.176,4=77. Patented Apri125,1876.

WITNESSES 610M I By NJEI'ERS, PHOTO-LITHOGRAHER, WASHINGTON. D c.

UNITED; STATES PATENT OFFICE.

rnrnu N FF, OF GAMBIER, OHIO.

' IMPROV MENT INIS'CRAPERS FOR LAMP-BLACK APPARATUS. A

Specification forming part of Letters Patent No. 176,477, dated April25, 1876; application filed September 3, 1875.

To all whom it may concern:

Be it known that 1, PETER NEFF, of Gambier, in the county ofKnox andState of Ohio, have invented certain new and useful Improvements inManufacturing Lamp-Black; and 1 do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use it,reference being had to the accompanying drawings, whichv form part ofthis specifica tion.

It is necessary, or at least very desirable, in the manufacture ofdamp-black, that the surfaces upon which the deposits of lamp-black aremade may be provided with brushes or cleaners to readily and'quicklyremove the deposits. These cleaners or scrapers, if they are made rigidin character, will not readily conform to the inequalities :of thesurface and successfully remove "the deposits. It is important inmachinery for the manufacture of lampblack that such brushes or cleanersshould be provided, because the surfaces are to a greater or less extentsubject to unequal heating by the flame which is intercepted by thesurfaces, which is liable to cause local warpingor derangements of thedepositing-surtaces' With such end in view my invention consists invertical spring-pressed metallic scrapers, having flanged workingextremities, andloosely hinged to opposite sides of a'supportin gcross-bar, in rows aflbrdiug alternate space intervals between theirrespective scrapers.

In the drawings, Figure l is a side elevation, and Fig. 2 a plan view.

A is a scraper of sheet-metal construction, and extendingverticallyupward from its supporting connection on the rigidcross-pieceB. It is hinged loose and free at its'engagingpoint, so thatwhile firmly secured it yet admits of an easy reciprocating movement ina plane at right angles to the longer diameter of the cross-bar. Theupper or working extremity of the scraper flares out squarely on eitherside thereof, so as to present a plane surface to. the face of thedepositing-surface. It is also thus provided with a double-edgedcleaning extremity. A spring, 0, finding base engagement in thecross-piece, is brought forward and up, so as to bear'against saidcrosspiece as a fulcrum, forming a lever of the first order. It engagesin any suit-able manner with the upper extremity of the scraper, andacts upon it as the weight to be operated.

It is apparent that the character of the depositing-surface isimmaterial to my invention. It may be either concave, convex, flat, withdepending caps or guards at its edges, or any other suitable formemployed in the manufacture of lamp-black. This scraper may be at-,tached to a car, which car is made to traverse on suitable ways beneathor adjacent to the depositing-surface. In such cases there should besome suitable spring-work for pressing the scraper snugly against thesurface.

If the surface be concave or convex, or of any other peculiar shape,then of course the scraping-edge may be made to conform therewith.

The scraper, it will be observed, is located upon.a suitable support, B,and a spring, (3, serves to press the scraper against the surface.

As before stated, these scrapers may be employed upon suitable travelingcars, so as to travel beneath the depositing-surface with the said cars,in order that the deposits, as scraped from the surface, will fall intoand be collected by the car; but it is not absolutely necessary, as itis manifest that if there be a common receptacle beneath the burners,into which the lamp black may fall, these scrapers with out the car maybe caused to traverse beneath and in contact with the surfaces, scraping0E and dropping the deposits into the common receptacle below.

It is immaterial with what character of lam pblack apparatus thesescrapers are employed. They may be either employed with apparatus wherethe burners are erected beneath the depositing-surfaces, or where theburners descend from above, or where they project simply through thedepositing-surface from behind.

Where the scrapers are employed in connec tion with a car, the carshould be made to traverse the length of the depositing-surfaces bymeans of wire to draw the same; or if a car is not employed, thensimilar wires may be attached directly to the brushes or scrapersthemselves, as no injury will result to them by coming under theinfluence of any burner,

Scrapers or brushes of the nature herein described will serve to removethe lamp-black without polishing it against the surface. It is,therefore, in a proper condition to be bolted readily through a properbolting-cloth.

This efi'eot is only produced by brushes or scrapers that will yield andprevent the polishing or caking that would interfere with properbolting.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. Spring-pressed metallic scrapers loosely hinged to opposite sides ofa supporting cross bar, in rows having alternate space intervals PETERNEFF. Witnesses E. CLIFFORD NEFF,

D. L. FOBES.

